Determination of Sulfur in Barite by Sodium Carbonate-Zinc Oxide Semi-molten Decomposition and Barium Sulfate Gravimetric Method
The traditional sodium carbonate-zinc oxide semi fusion method causes little corrosion of the crucible and effects small interferences, but the analytical results of sulfur are unstable due to an incomplete break of the lattice structure of barite. The decomposition conditions during semi fusion tha...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Science Press, PR China
2015-09-01
|
| Series: | Yankuang ceshi |
| Subjects: | |
| Online Access: | http://www.ykcs.ac.cn/en/article/doi/10.15898/j.cnki.11-2131/td.2015.05.013 |
| _version_ | 1811168450600501248 |
|---|---|
| author | ZHANG Zhi-yong CHEN Shu LI Zi-shang ZHOU Hai-bo LIU Xiao-feng |
| author_facet | ZHANG Zhi-yong CHEN Shu LI Zi-shang ZHOU Hai-bo LIU Xiao-feng |
| author_sort | ZHANG Zhi-yong |
| collection | DOAJ |
| description | The traditional sodium carbonate-zinc oxide semi fusion method causes little corrosion of the crucible and effects small interferences, but the analytical results of sulfur are unstable due to an incomplete break of the lattice structure of barite. The decomposition conditions during semi fusion that affect the conversion of sulfur are investigated and reported in this paper. Results show that the incomplete decomposition of barite was due to the grain sizes of samples and fluxes being too big. The modified method is that samples with sizes of less than 0.1 mm mixed with sodium carbonate-zinc oxide flux with sizes of less than 0.18 mm are decomposed at 790℃ for 60 min. Under these conditions, barite can be converted to BaCO3 and isolated with SO42- quantitatively through semi molten decomposition in a porcelain crucible, which avoids the use of the platinum crucible, damage of crucibles by strong oxidizing agents, and reduces the interference substances during melting. The RSD for this method was less than 1% and the recovery was more than 99.5%. This method can be applied to determine sulfur content of complex geological samples containing barite. |
| first_indexed | 2024-04-10T16:27:41Z |
| format | Article |
| id | doaj.art-1a0bcfdfba8c4b8f8af8669580d89f85 |
| institution | Directory Open Access Journal |
| issn | 0254-5357 |
| language | English |
| last_indexed | 2024-04-10T16:27:41Z |
| publishDate | 2015-09-01 |
| publisher | Science Press, PR China |
| record_format | Article |
| series | Yankuang ceshi |
| spelling | doaj.art-1a0bcfdfba8c4b8f8af8669580d89f852023-02-09T01:42:33ZengScience Press, PR ChinaYankuang ceshi0254-53572015-09-0134557557810.15898/j.cnki.11-2131/td.2015.05.013ykcs-34-5-575Determination of Sulfur in Barite by Sodium Carbonate-Zinc Oxide Semi-molten Decomposition and Barium Sulfate Gravimetric MethodZHANG Zhi-yong0CHEN Shu1LI Zi-shang2ZHOU Hai-bo3LIU Xiao-feng4Changsha Research Institute of Mining and Metallurgy, Changsha 410012, ChinaChangsha Research Institute of Mining and Metallurgy, Changsha 410012, ChinaChangsha Research Institute of Mining and Metallurgy, Changsha 410012, ChinaChangsha Research Institute of Mining and Metallurgy, Changsha 410012, ChinaSchool of Chemistry and Chemical Engineering, Central South University, Changsha 410083, ChinaThe traditional sodium carbonate-zinc oxide semi fusion method causes little corrosion of the crucible and effects small interferences, but the analytical results of sulfur are unstable due to an incomplete break of the lattice structure of barite. The decomposition conditions during semi fusion that affect the conversion of sulfur are investigated and reported in this paper. Results show that the incomplete decomposition of barite was due to the grain sizes of samples and fluxes being too big. The modified method is that samples with sizes of less than 0.1 mm mixed with sodium carbonate-zinc oxide flux with sizes of less than 0.18 mm are decomposed at 790℃ for 60 min. Under these conditions, barite can be converted to BaCO3 and isolated with SO42- quantitatively through semi molten decomposition in a porcelain crucible, which avoids the use of the platinum crucible, damage of crucibles by strong oxidizing agents, and reduces the interference substances during melting. The RSD for this method was less than 1% and the recovery was more than 99.5%. This method can be applied to determine sulfur content of complex geological samples containing barite.http://www.ykcs.ac.cn/en/article/doi/10.15898/j.cnki.11-2131/td.2015.05.013baritesulfatesodium carbonate-zinc oxide semi-molten decompositionbarium sulfate gravimetric method |
| spellingShingle | ZHANG Zhi-yong CHEN Shu LI Zi-shang ZHOU Hai-bo LIU Xiao-feng Determination of Sulfur in Barite by Sodium Carbonate-Zinc Oxide Semi-molten Decomposition and Barium Sulfate Gravimetric Method Yankuang ceshi barite sulfate sodium carbonate-zinc oxide semi-molten decomposition barium sulfate gravimetric method |
| title | Determination of Sulfur in Barite by Sodium Carbonate-Zinc Oxide Semi-molten Decomposition and Barium Sulfate Gravimetric Method |
| title_full | Determination of Sulfur in Barite by Sodium Carbonate-Zinc Oxide Semi-molten Decomposition and Barium Sulfate Gravimetric Method |
| title_fullStr | Determination of Sulfur in Barite by Sodium Carbonate-Zinc Oxide Semi-molten Decomposition and Barium Sulfate Gravimetric Method |
| title_full_unstemmed | Determination of Sulfur in Barite by Sodium Carbonate-Zinc Oxide Semi-molten Decomposition and Barium Sulfate Gravimetric Method |
| title_short | Determination of Sulfur in Barite by Sodium Carbonate-Zinc Oxide Semi-molten Decomposition and Barium Sulfate Gravimetric Method |
| title_sort | determination of sulfur in barite by sodium carbonate zinc oxide semi molten decomposition and barium sulfate gravimetric method |
| topic | barite sulfate sodium carbonate-zinc oxide semi-molten decomposition barium sulfate gravimetric method |
| url | http://www.ykcs.ac.cn/en/article/doi/10.15898/j.cnki.11-2131/td.2015.05.013 |
| work_keys_str_mv | AT zhangzhiyong determinationofsulfurinbaritebysodiumcarbonatezincoxidesemimoltendecompositionandbariumsulfategravimetricmethod AT chenshu determinationofsulfurinbaritebysodiumcarbonatezincoxidesemimoltendecompositionandbariumsulfategravimetricmethod AT lizishang determinationofsulfurinbaritebysodiumcarbonatezincoxidesemimoltendecompositionandbariumsulfategravimetricmethod AT zhouhaibo determinationofsulfurinbaritebysodiumcarbonatezincoxidesemimoltendecompositionandbariumsulfategravimetricmethod AT liuxiaofeng determinationofsulfurinbaritebysodiumcarbonatezincoxidesemimoltendecompositionandbariumsulfategravimetricmethod |